That's for you to decide.
Gotcha.
Heres a little tale...
So just came across a little tid bit on how the Soninke's practiced human sacrifice way back in the day before Islam hit so, lets try and squash that shall we...
Public Encylopedia
Thorkin Cissa, Tales of the Easterner ( Carthage University, 1949)
Of the most mysterious yet paradoxically well known figures to grace the 4th century is a figure rose to prominence in the Sahel. Their name is ,of course, none other than Dinga Cissa, the first king of the Soninke kingdom and founder of one Africa's longest most powerful and longest reigning dynasties.
Above the near mythical status his leadership provided the weakened Soninke, his legend seems to have been subsumed into myth rather than fact, but there consistencies in his story that have withstood the test of time and memory.
For one, the fact that he came from the east of either a foreign yet related peoples or a far western Soninke branch clan is not disputed. Neither is it debated that he was banished from his clan because of some jealousies over his growing influence and power by a sibling.
It is with this fact that we can gather that Dinga seemed to have been seen as an upstart even among his own people for either his intellect or charisma. It is also with this in mind that we can trace his steps and goals in risking an alliance in one of the more open western clans by seduction. It is said that although he was relegated to cleaning the house of his adopters and adopting their ways, he somehow convinced the locals to put him in charge of their planned offense of the local Berber raiders but with one condition.
To do away with their sacrifices since they had not worked in repelling their enemies and to absorb their enemies and compel an annual tribute from them instead for the their rituals and payment. With their agreement, it was this single change from Dinga's proposal that would the set the culture of the Soninke on a course for greatness...
EDIT: I made Dinga sound very ambitious to fit in with the OTL tales that make their past kings out to be the wise, ambitious, clever, trickster types. Might not even match up to how they really are but that's what the locals seem to recall so...